This simple project was motivated by having to jurry rig a 12VDC connection to my RV stepmotor so I can manually retract them. The controller on the steps fails at least once a year.
Then it got a bad case of “feature creep”.
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Any idea what causes the “failure”?
The step controller fails and its potted electronics so there is no access.
I absolutely hate those potted stuff. It always feels like they are trying to hide shoddy work behind a " oh you cant copy us" resin blob.
You ever consider replacing it with another controller, maybe custom designed? Or would that not be worth the cost/effort involved
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I am guessing that the potting is because it installs under the chassis in a harsh environment.
The step automatically extends and retracts with the door opening I think that is overkill so I keep it on manual. The system has no limit switches so it must use motor current to deted extension and retraction.
It has a failsafe that closes the step when the vehicle is started so you don’t accidentally leave it extended.
I think there must be a simpler and therefore more reliable controller but I pause and say to myself…
self … you do not need another project
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Yeah 
I can agree with that feeling of not needing another project Usually I tend to practice the “dont fix it if it is not totally broken” rule myself